Ignition coil adapting means



May 16, 1950 c. E. ADAMS IGNITION COIL ADAPTING MEANS Filed April 4, 1947 A m rneys Patented May 16, 1950 UNITED STATES PATENT OFFICE 1 Claim.

This invention relates generally to means for converting or adapting automotive ignition system distributors of the type having coils mounted thereon so that standard type automotive ignition coils can be used instead of such coils, and more particularly to a novel cap for replacing the usual ignition coil utilized in the Ford V-8 ignition system, whereby the ordinary or standard type of ignition coil can be effectively used in place of the Ford ignition coils, the primary object of this invention being to provide simple, practical, and efficient means whereby the more expensive and less easily available cost of a Ford V-8 ignition system can be replaced whenever desirable or necessary, by a less expensive and more easily obtained standard ignition coil.

Another important object of this invention is to provide a distributor coil replacing cap of the character indicated above which can be made in a form which is mechanically and electrically adequate at relatively low cost, and whose installation on the distributor is simple and quick, as well as its manner of connection to the standard type ignition coil terminals.

Other important objects and advantageous features of this invention will be apparent from the following detailed description and appended drawings, wherein, merely for purposes of illustration, a presently preferred embodiment is set forth.

In the drawings:

Figure 1 is a side elevation thereof, partly in section;

Figure 2 is a top plan view Figure 3 is a bottom plan view; and

Figure 4 is a vertical transverse section, taken on the line 4-4 of Figure 1.

Referring in detail to the drawing, the numeral 5 generally designates the dielectric body of the novel distributor coil replacing cap, preferably of Bakelite or other suitable plastic, having the irregular generally triangular plan shape shown in Figures 2 and 3, to fit the Ford V-8 distributor case (not shown), with retainer accommodating slots 6, 6 in the lateral extremities 'I of said body, and a ferrule 8 in the apex 9 thereof, whereby the cap can be installed on the distributor in place of the usual ignition coil (not shown).

The bottom ID of the body 5 is substantially plain except for a substantially centralized depending frustro-conical portion l I, having an axial bore l2 opening through its lower end, lined by a conductive metal sleeve [3, in which works a helical conductive spring l4 pressing behind a carbon contactor l5, which is thereby projected under proper tension for engaging the center of the distributor rotor (not shown).

A conductive strip I6 leads through the body 5 from the spring l4 into a canted socket l! which contains a metal receptor l8 for receiving and electrically engaging the high tension wire (not shown) of the standard type of ignition coil (not shown) which is to be used with the device herein disclosed.

The socket l1 and its receptor l8 are in a canted elevated portion 19 on the top of the body 5, which as shown in Figure 4 issubstantially frustroconical in form and is located midway between the sides of the body 5, and above the location of the depending conical portion I l. Above the cone H3 is located a binding post 20 equipped with a lock nut 2| and a clamping nut 22, for clamping a ground wire (not shown) thereto with the shank 23 passing downwardly at an angle through and to the bottom of the body 5, where the shank has a flange 24 to which is secured a depending spiral spring ground contactor 25.

The herein disclosed distributor conversion unit or cap is readily installed on the Ford V-8 ignition system distributor upon removal of the usual ignition coil element thereof, whereupon the terminals of a standard type of automotive ignition coil are readily connected with the replacement cap. It is found that point and condenser impairment or failure and other ignition troubles which are usually difficult to locate and isolate in the usual Ford V-8 ignition system, are more easily found with the rearrangement provided by the present invention.

I claim as my invention:

A distributor conversion cap for replacing the existent distributor mounted coil on a Ford V-8 distributor or the like so as to enable the use of a standard type of automotive ignition coil instead of the Ford type ignition coil, said conversion cap comprising a dielectric material body shaped to replace the coil on the distributor, said body having a centralized depending portion embodying a spring pressed contactor for engaging the contact of the rotor of the distributor and a second contactor at one side of the first mentioned contact in the form of a metal spring arranged to engage a conductive portion of the casing of said distributor, a binding post on the top of said conversion cap connected to said second contactor through said body and arranged to connect the standard coil ground wire, and a receptor connected through said body with the first mentioned contactor for connection of the high tension wire of said standard coil.

CLAUDE E. ADAMS.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,955,394 Stromberg Apr. 17, 1934 2,151,519 Kubelus Mar. 21, 1939 

